- Cargo Muchacho Mining District (Hedges Mining District; Ogilby Mining District)
| Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 275 Sampson, Reid J. & W. Burling Tucker (1942), Mineral resources of Imperial County: California Mining Bureau. Report 38: 139 |